A local leader of the Jamaat Islami (JI) was gunned by unidentified men in the Tarkakhoi area of Karak on Sunday.
According to the police, the assailants fled the scene after opening indiscriminate fire on Ameen, killing him on the spot.
The body was shifted to a local hospital for medico-legal requirements.
Meanwhile, JI Ameer Munawar Hassan, Secretary General Liaquat Baloch and other party leaders condemned the murder of the party office bearer.
They demanded that the culprits be caught and and given exemplary punishment.
The police have registered a case and started investigation.